Reciprocating compressor



June 15, 1948. J. F. EKLEBERRY ancxrnocnme COMPRESSOR Filed m 4' 945 famed l/8562 pressor pressed, or pumped thereby.

Patented June 1 5, 1948 UNITED STATES PATENT orrics I 2,443,344 ancrraoca'rmc comraassoa. James s am Miami. Fla. Application May 4, 1945, Serial No. 591,962

This invention relates to a reciprocating compressor, and more particularly to sucha comadapted to be operated by a solenoid.

A primary object of this invention is the provision of an improved reciprocating compressor,

8 Claims. (CL 230-55) adapted to be contained within a sealed housing, wherein the reciprocation is affected by alter g nating the energization of solenoid coils.

. An additional object of the invention is the provision of such a device having improved inlet andoutlet-means, whereby fluid may Still another object of the invention is the provision of such a device provided with magnetically actuated circuit opening and closing mechanism, whereby solenoid coils at opposite ends of the device may be alternately energized by a movement of the solenoid core.

Still another object of the invention'is the provision of such a device embodying improved valve means for passing fluid therethroush.

- Other objects reside in the provision of such a device which will be sturdy and durable in construction, reliable and eiiicient in operation, and relatively simple and inexpensive to manufacture and operate. g I

Other objects reside in the combinations of elements, arrangements of parts, and features of construction, all as will be more fully pointed out hereinafter and disclosed inthe accompanying drawings wherein there is shown a preferred embodiment of this inventive concept.

In the drawings:

Figure 1 is a longitudinal-sectional view taken along the center line of one form of the device embodying the inventive concept.

Figure 2 is a sectional view taken substantially along the line 2-2 of Figure 1- as viewed in the direction as indicated by thearrows.

. Figure 3 is a sectional view taken substantially along the line 3-40! Figure 1 and viewed in the direction indicated by the arrows, and I Figure 4 is-a schematic wiring diagram disclosing the method of energizing the device.

Similar reference characters refer to similar I parts throughout the several views of the drawings.

- Having reference now to the drawings, the device of the instant invention is comprised of a' housing, including two separable halves ill and 7 ll, provided respectively with abutting flanges l2 and II, and secured in related assembly as by means of bolts or the like "II. The housing includes a central cylindrical chamber I! having tapered fmsto-conical'end portions, from 2 which extend bores ii, the outer diameter of which is substantially less than that of the-cemtral chamber ll.

Positioned within the chamber i! for reciprocation is a solenoid core II, the ends of which are tapered as at it, to conform to the tapered extremities of the chamber i5, and from which extend two projections it, of a diameter to flt be comsnugly within the extending bores l6. Sealing rings 20 are provided about the body of the core l1, and additional sealing rings 2i are correspondingly positioned adjacent the extremities of the extensions f9.

Each of the extending portions i9 is provided with a'centrally disposed bore 22, in which is positioned a valve member 23, adapted to open and close under conditions to be more fully described hereinafter. The valves 23 are provided with internal flanges 24 adapted, by abutment with pins 25, to retain the valve in related assembly within the bores 22.

Extending radially from the inner ends of the bores 22 are a plurality of passages 26, which terminate in chambers 21 opening outwardly on the surfaces II of the solenoid ll. Positioned within each of the chambers 21 is a ball valve 28 normally biased to closed position as by a spring ,29. Retaining rings 30 serve as valve seats, and correspondingly to retain the ball valves 28 in position within the recesses 21.

Surrounding each of the body portions iii and ii is a solenoid coil 3! and 32, respectively, and correspondingly surrounding each of the extending portions defining the bores it are solenoid Cells 33 and 34. r

Inlet .valves 95 are positioned in inlet passageways 36 adjacent the ends of each of members ill and II, and permit the access of fluid to the chamber i5. Correspondingly, outlet valves comprised of balls 31 biased by springs 38 are positioned in outlet passages 39 at the outer extremities of each of bores i6. a

From "the foregoin it will now be seen that when the solenoid core I! is reciprocated in a manner to be more fully described hereinafter by means by the solenoid coils ii; 32, 33, and 34.

that-fluid enters through one of the inlet valves 35, and as the solenoid moves toward the open inlet the associated ball valves 2-8 are forced inwardly by fluid pressure, thus forcing the fluid through the bores 26 into the appropriate chamber 22.- ,which pressure causes the opening of the valve. and correspondingly forces the valve 3 open topump the fluid outwardly throughv-the appropriate outlet 39. Thus, aconstantflow of fluid through one or the other of the openings 33 is maintained depending upon the relative position of the solenoid core I! within the housing l5.

Positioned at the juncture of the flanges l2 and i3 is a projection 45' bifurcated at its upper extremity and carrying on a pivot 45 an arm 41.

ternately abutted by projections 58 and 59, re-.

spectively, carried by the arm 41 dependent on the position thereof, in accordance with the actaxation of the magnetic transfers l9.

Referring now particularly to Figure 4 wherein there is disclosed a wiring diagram of a circult for use in conjunction with the device of the instant invention alternating current enters, through wires 50 and 5|, a conventional full wave rectifier generally indicated as 52, from which rectifier a, wire 53 leads to contacts 58 and 51.

A wire 54 leads to a terminal 85, from rectifier 52, from which terminal wires 56 and 51 lead to the extremities of coils 33 and 34, respectively, it being noted that coil 34 is electrically connected with coil 32 and coil 33 is electrically connected with coil 3|. The opposite extremities of coils 3| and 32 are connected through condensers 1B and H to a juncture 12 with wires 63, and correspondinglyassociated through leads l4 and 1'5 with contacts 54 and 55, respectively.

It will now be seen that when the system is energized in any desired manner, in accordance with the position of the core ll within the chamber l5, either contacts 54 and 55-, or contacts 55 and 51 will be closed, to energize their associated coils, thus moving the solenoid to the associated end of the chamber and effecting a pressure of fluid from the inlet 35 to an outlet 39 in the manner previously described. Simultaneously the associated magnetic transfer 49 will be energized by the proximity of the solenoid core, to break the circuit and simultaneously close the opposite circuit, thus effecting a continuous and rapid reciprocatory movement of the core l1, and a corresponding continuous passage of fluid through one or the other of the outlets 39.

From the foregoing it will now be seen that there is herein provided n improved reciprocating compressor, accomplishing all the objects of this invention and others including many advantages of great practical utility and commercial importance.

As many embodiments may be made of this inventive concept, and as many modifications may be made in the embodiment hereinbefore shown and described, it is to be understood that all matter herein is to be interpreted merely as illustrative and not in a limiting sense.

I-claim:

1. An electro-magnetic pump comprising a central cylindrical chamber forming pre-compression chambers with a double acting piston reciprocable therein, a concentric piston carried by said double-acting piston at each side thereof, compression chambers receiving said concentric pistons, fluid inlet means at each end of said central chamber and a compressed fluid outlet from each compression chamber and by-pass means from said central chamber to said compression chambers, and electro-magnetic means' for reciprocating said pistons in automatic. timed relation.

2. An electro-magnetic pump comprising a central cylindrical chamber forming pre-compression chambers with a double acting piston reciprocable therein, a concentric piston carried by said double-acting piston at each side thereof, compression chambers receiving said concentric pistonafluid inlet means at each end of said central chamber and a compressed fluid outlet from each compression chamber and by-pass means from said central chamber to said compression chamber, and electro-magnetic means for reciprocating said pistons in automatic, timed relation, said concentric piston being disposed in tandem to'said double-acting piston.

3. An electro-magnetic pump comprising a central cylindrical chamber forming pre-compression chambers with a double acting piston reciprocable therein, a concentric piston carried by said double-acting piston at each side thereof, compression chambers receiving said concentric pistons, fluid inlet means at each end of said central chamber and a compressed fluid outlet lrom each compression chamber and by-pass means from said central chamber to said compression chambers, and solenoid means for reciprocating said pistons in automatic, timed relation, said concentric piston being of reduced diameter and carried by said double-acting piston.

- 4. An electro-magnetic pump comprising a central cylindrical chamber forming pre-compression chambers with a double acting piston reciprocable therein, a concentric piston carried by said double-acting piston at each side thereof, compression chambers receiving said concentric pistons, fluid inlet means at each end of said central chamber and a compressed fluid outlet from each compression chamber and bypass means from said central chamber to said compression chambers, and solenoid means for reciprocating said pistons in automatic, timed relation, and control means, engageable by said double-acting piston for energizing said solenoid in time relation.

5. An electro-magnetic pump comprising a central cylindrical chamber forming pre-compression chambers with a double acting piston reciprocable therein, a concentric piston carried by said double-acting piston at each side thereof, compression chambers receiving said concentric pistons, fluid inlet means at each end of said central chamber and a compressed fluid outlet from each compression chamber and bypass means from said central chamber to .said compression chambers, and solenoid means for reciprocating said pistons in automatic, timed relation, said by-pass means connecting one face of said double-acting piston with a compression chamber on the opposite side thereof.

6. An electro-magnetic pump comprising a central cylindrical chamber forming pre-compression chambers with a double acting piston reciprocable therein, a concentric piston carried by said double-acting piston at each side thereof, compression chambers receiving said con centric pistons, fluid inlet means at each end of said central chamber and a compressed fluid outlet from each compression chamber and bypass means from said central chamber to said compression chambers, and solenoid means for reciprocating said pistons in automatic, timed relation, said by'-pass means connecting one face outlet from each compression chamber and bypass means from said central chamber to said compression chambers, and solenoid means for reciprocating said pistons in automatic, timed relation, said by-pass means connecting one face of said double-acting piston with a compression chamber on the opposite side thereof, and oneway check valves in said by-pass at each end thereof.

8. An electro-magnetic pump comprising a, central cylindrical chamber forming pre-compression chambers with a double acting piston reciprocable therein, a concentric piston carried by said double-acting piston at each side thereof, compression chambers receiving said concentric pistons, fluid inlet means at each end of said central chamber and a compressed fluid outlet from each compression chamber and bypass means from said central chamber to said compression chambers, and solenoid means for reciprocating said pistons in automatic, timed relation, and control means, engageable by said double-acting piston for energizing said solenoid in time relation, and a solenoid surrounding each pre-compression chamber and another'solenoid surrounding each compression chamber, said solenoids being connected in series for actuation by said control means.

JAMES F. EKLEBERRY.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,556,059 Williams Oct. 6, 1925 1,684,468 Brown Sept. 18, 1928 1,783,611 Gohring Dec. 2, 1930 1,804,375 Cobe May 5, 1931 1,844,772 LaPointe Feb. 9, 1932 1,925,934

Rimstad et a1 Sept. 5, 1933 

